Guys,chk out yamaha's mpg rating i cut & pasted from the 1700 R*'s spec sheet .
Yamaha rates the 1700 R8 for 36mpg on avg.
Yes some can do better then 36mpg on avg esp when riding 1 up/flat roads/no bags or bags not loaded/slower cruise speeds lke 60-65mph/no headwinds/conservative riding- throttle use.
But with the mfg/yamaha stating on avg 36mpg for the 1700 R* is where it should be it doesnt look like most people are doing that bad running low to mid 30's (33-35mpg) on avg when yamaha states a 36mpg rating for the r* i pasted below.
And this spec if for EFI R* that should do better then carb
'd R* becasue EFI runs cleaner/can control fuel mixture better then a carb in most cases.
So if your Carb'd R*s are running well & getting 32-35mpg on avg not seeming to run rich or smeeling like it running rich /plugs looking good - med to very light tan color not looking dark brown or black like running too rich i would not worry about it.
See below for Yamah's mpg spec on FEI 1700 R* i cut & pasted below.
Engine 102 ci
, air-cooled, 48° V-twin, pushrod OHV, 4-valves / cylinders
Displacement 1670 cc
Bore x Stroke 97 x 113 mm
Compression Ratio 8.3:1
Fuel System Fuel injection
Fuel Capacity 5.3 gal.
MPG Rating 36 mpg
Clutch Multi-plate wet